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SMD Switching Diode
SMD Diodes Specialist
CDSF4148-HF(RoHS Device)
High Speed
Features
Halogen free. Designed for mounting on small surface. Extremely thin/leadless package. High mounting capability, strong surge withstand, high reliability. Use in sensitive electronics protection against voltage transients induced by inductive load switching and lighting on ICs, MOSFET, signal lines of sensor units for consumer, computer, industrial, automotive and telecommunication.
0.051(1.30) 0.043(1.10)
1005(2512)
0.102(2.60) 0.095(2.40)
0.035(0.90) 0.027(0.70)
Mechanical data
Case: 1005(2512) standard package, molded plastic. Terminals: Gold plated, solderable per MIL-STD-750,method 2026. Polarity: Indicated by cathode band. Mounting position: Any Weight: 0.006 gram(approx.).
0.020(0.50) Typ.
0.012 (0.30) Typ.
0.040(1.00) Typ.
Dimensions in inches and (millimeter)
Maximum Rating (at TA=25 C unless otherwise noted)
O
Parameter
Reverse voltage Reverse voltage Average forward current Forward current,surge peak Repetitive peak forward current Power dissipation Thermal resistance junction to ambient air Storage temperature Junction temperature TP = 1uS TP = 1mS
Conditions
Symbol Min Typ Max Unit
VRRM VR IO IFSM IFRM PD RJA TSTG Tj -40 4 1 300 350 286 +125 +125 100 75 150 V V mA A mA mW C/W
O
C C
O
Electrical Characteristics (at TA=25 C unless otherwise noted)
O
Parameter
Reverse breakdown voltage Forward voltage Reverse current Capacitance between terminals Reverse recovery time I R = 100 uA
Conditions
IF = 50 mA DC VR = 20 V VR = 75 V f = 1 MHZ,and 0VDC reverse voltage IF = IR = 10 mA, RL =100 ohms, Irr = 1mA
Symbol Min Typ Max Unit
VBR VF IR CT Trr 75 1.0 25 2.5 4 4 V V nA uA
PF
nS
REV:B
QW-G0003
Comchip Technology CO., LTD.
Page 1
SMD Switching Diode
SMD Diodes Specialist
RATING AND CHARACTERISTIC CURVES (CDSF4148-HF)
Fig. 1 - Forward characteristics
1000 10u
Fig. 2 - Reverse characteristics
125 C
Reverse current ( A )
Forward current (mA )
100
1u
10
100n
75 C
1
C C
10n
25 C
1n
125
C 25
75
0.1
-25
C
0.01 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
0.1n 0 10 20 30
-25 C
40 50 60 70 80 90 100
Forward voltage (V)
Reverse voltage (V)
Fig. 3 - Capacitance between terminals characteristics
Capacitance between terminals : (pF)
5.0
Fig. 4 - Current derating curve
Average forward current ( % )
f=1MHz Ta = 25 C
4.0
Mounting on glass epoxy PCBs
100
80
3.0
60
2.0
40
1.0
20
0 0 5 10 15 20 25 30 35
0
0 25 50 75 100 125 150
Reverse voltage : (V)
Ambient temperature ( C)
REV:B
QW-G0003
Comchip Technology CO., LTD.
Page 2
SMD Switching Diode
SMD Diodes Specialist
Reel Taping Specification
P0 P1 d Index hole E T
F B
Polarity
W C
P
A
12 0
o
D2
D1 D
W1
Trailer ....... .......
10 pitches (min)
Device ....... ....... ....... .......
Leader ....... .......
10 pitches (min)
End
Start
Direction of Feed
SYMBOL
A
1.55 0.10
0.061 0.004
B
2.65 0.10
0.104 0.004
C
1.05 0.10
0.041 0.004
d
1.55 0.05
0.061 0.002
D
178 1
7.008 0.04
D1
60.0 MIN.
2.362 MIN.
D2
13.0 0.20
0.512 0.008
F/1005
(mm) (inch)
SYMBOL
E
1.75 0.10
0.069 0.004
F
3.50 0.05
0.138 0.002
P
4.00 0.10
0.157 0.004
P0
4.00 0.10
0.157 0.004
P1
2.00 0.05
0.079 0.004
T
0.23 0.05
0.009 0.002
W
8.00 0.20
0.315 0.008
W1
13.5 MAX.
0.531 MAX.
F/1005
(mm) (inch)
REV:B
QW-G0003
Comchip Technology CO., LTD.
Page 3
SMD Switching Diode
SMD Diodes Specialist
Suggested PAD Layout
F/1005 SIZE (mm) A B C D E 2.10 1.20 1.20 3.30 0.90 (inch) 0.083 0.047 0.047
C D A E
0.130
B
0.035
Standard Package
Qty per Reel Case Type (Pcs) F/1005 4000 Reel Size (inch) 7
REV:B
QW-G0003
Comchip Technology CO., LTD.
Page 4

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